all. While looking at my squash leaves I noticed some mottling. I was worried it was beginning stages of mosaic. But after looking at this link http://aggie-horticulture.tamu.edu/vegetable/cucurbit-problem-solver/leaf-disorders/

I am wondering if it is a deficiency of some sort. Calcium? Most of my squash plants, beans and cucumbers have some of this leaf discoloration from one degree or another.

Are those at home soil testing kits acurate? Does this look more like a disease or deficiency?

Thanks,

Jen